This crossword No. 11756 clues and answers were published on Sat 12 Jan 2008 and the puzzle can be visited by following The Guardian Quick Crossword No. 11756 link.
All Across Clues and Answers:
1-across – Constantly on the weed : CHAINSMOKING
9-across – Native of Houston, perhaps : TEXAN
10-across – Affected charm : UNCTION
11-across – Jason’s ship : ARGO
12-across – Integral : TRIANGLE
14-across – Marine bird – greedy person : GANNET
15-across – Casual piece of work : ODDJOB
18-across – Having the right : ENTITLED
20-across – Wreck : RUIN
22-across – Eight-sided shape : OCTAGON
23-across – Sixteenth of a pound : OUNCE
24-across – Able to be proved : DEMONSTRABLE
All Down Clues and Answers:
2-down – Six-sided shape : HEXAGON
3-down – Scottish island : IONA
4-down – Old-fashioned : SQUARE
5-down – Fields of fruits : ORCHARDS
6-down – Topping : ICING
7-down – Person adopting an androgynous style : GENDERBENDER
8-down – Complete control : STRANGLEHOLD
13-down – Location of the US Department of Defense : PENTAGON
16-down – Newspaper : JOURNAL
17-down – Seed also known as a goober : PEANUT
19-down – Native American symbol : TOTEM
21-down – Hindu physical and mental exercises : YOGA
This crossword has in total 24 where 12 are across and 12 are down.